IPv4 subnet
0.0.0.0/16
- IPv4
- This network
- /16
- 65,534 hosts
0.0.0.0/16 is an IPv4 subnet of 65,536 addresses, of which 65,534 are usable hosts. Its network address is 0.0.0.0, its broadcast address is 0.0.255.255, and its subnet mask is 255.255.0.0. The block is this network: RFC 1122, only valid as a source address.
Address
00000000000000000000000000000000
Dotted decimal0.0.0.0
32-bit integer0
Hexadecimal0x00000000
Binary00000000.00000000.00000000.00000000
Octal00.00.00.00
Octets1: 0 · 2: 0 · 3: 0 · 4: 0
Reverse DNS name0.0.0.0.in-addr.arpa
IPv4-mapped IPv6::ffff:0.0.0.0
IPv6 compact form::ffff:0:0
Subnet 0.0.0.0/16
Network address0.0.0.0
Broadcast address0.0.255.255
Subnet mask255.255.0.0
Wildcard mask0.0.255.255the inverse mask, as used in ACLs
Prefix length/16
Total addresses65,536
Usable hosts65,534the network and broadcast addresses are not assignable
First usable host0.0.0.1
Last usable host0.0.255.254
Host range0.0.0.1 – 0.0.255.254
Mask in binary11111111.11111111.00000000.00000000
Contains this addressYes
Scope & registry
TypeThis networkRFC 1122, only valid as a source address
Routable on the public internetNo
Legacy classA (/8 by the old classful scheme)classful addressing was replaced by CIDR in 1993; shown for reference only
LoopbackNo
MulticastNo
Safe to use in documentationNo
Related prefixes
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